Show:
Adding with Same Sign
Adding With Different Signs
Multiplying
Dividing
Subtracting
100

(-4) + (-12)

-16

100

(-2) + 15

13

100

(-8)(9)

-72

100

21 ÷ -7

-3

100

10 - 12

-2

200

-9 + -1

-10

200

8 + (-20)

-12

200

(-12)(-4)

48

200

-30 ÷ 10

-3

200

(-8) - (-4)

-4

300

13 + 18

31

300

1 + -9

-8

300

13(-3)

-39

300

-82 ÷ 2

-41
300

0 - 12

-12

400

-14 + -9

-23

400

22 + -10

12

400

(-21)(-10)

120

400

-18 ÷ -0.5

36

400

10 - 7

3

500

21 + 35

56

500

18 + -100

-82

500

(18)(-2)

-36

500

360 ÷ -45

-8

500

10 - (-3)

13